Here we discuss a holographic model for the nuclear mass spectrum. To make a broad discussion, we explore three different holographic approaches to implement the nuclear energy scales in the five-dimensional AdS-like geometry. We first discuss the well-known hard-wall model [1]}, [2]}, where a hard cutoff sets the energy scale in the bulk geometry. The hardwall model is a holographic analog of the bag model [3]} and provides a simple and intuitive way of breaking the conformal symmetry. We find that the hardwall model describes the nuclear spectra with reasonable accuracy (RMS error near 11 %) when we consider just ground states for different \(Z\)  values. However, if we consider radial excitations we obtain masses not in agreement with the nucleus considered. Then we try to improve the holographic description by considering the adaptation of the softwall model [4]}, [5]} to the nuclear context. In this scenario, we specify a static and quadratic dilaton by setting the energy scale with the \(^4_2\) He mass. In this situation, with one parameter associated with the nuclear energy scale, we found a RMS near to 4 \(\%\) .
